C07C 305/00
Esters of sulfuric acids
Official title: Esters of sulfuric acids (cyclic esters C07D)
C07C305/00 (Esters of sulfuric acids) appears on 355 US grants and 320 published applications in this corpus.
Search patents in C07C- Granted patents
- 355
- Published applications
- 320
- Assignees
- 228
- Inventors
- 987
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 8 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 9 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 14 | 0 |
| 2001 | 11 | 3 |
| 2002 | 11 | 9 |
| 2003 | 2 | 7 |
| 2004 | 7 | 20 |
| 2005 | 4 | 11 |
| 2006 | 8 | 10 |
| 2007 | 6 | 12 |
| 2008 | 7 | 10 |
| 2009 | 8 | 13 |
| 2010 | 8 | 14 |
| 2011 | 11 | 14 |
| 2012 | 9 | 12 |
| 2013 | 13 | 7 |
| 2014 | 2 | 17 |
| 2015 | 6 | 13 |
| 2016 | 12 | 14 |
| 2017 | 15 | 13 |
| 2018 | 9 | 7 |
| 2019 | 9 | 19 |
| 2020 | 9 | 13 |
| 2021 | 14 | 20 |
| 2022 | 11 | 10 |
| 2023 | 10 | 14 |
| 2024 | 8 | 14 |
| 2025 | 6 | 19 |
| 2026 | 11 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 305/02Esters of sulfuric acids: having oxygen atoms of sulfate groups bound to246
- C07C 305/22Esters of sulfuric acids: having oxygen atoms of sulfate groups bound to38
- C07C 305/26Halogenosulfates, i.e. monoesters of halogenosulfuric acids30
- C07C 305/20Esters of sulfuric acids: having oxygen atoms of sulfate groups bound to10
Recent patents
- Cannabinoid sulfate esters, their salts and uses thereof16 Jun 2026US 12,655,094 B2London Pharmaceuticals and Research Corporation
- Hair restructuring association comprising a quaternary ammonium salt and a sulpho-derivative of vegetable fatty acids9 Jun 2026US 12,648,900 B2Greengredients S.r.l.
- Artificially synthesized sphingosine derivative lipoid monomer and use of same for delivering nucleic acid19 May 2026US 12,629,421 B2Beijing Baishihekang Pharmaceutical Technology (Bsjpharma) Co., Ltd
- Ionic compound, absorbent and absorption device28 Apr 2026US 12,612,404 B2Industrial Technology Research Institute
- Bissulfonate compound, preparation method therefor, electrolyte solution and energy storage device17 Mar 2026US 12,580,227 B2Guangzhou Tinci Materials Technology Co., Ltd.
- Aryl hydrocarbon receptor agonist prodrugs and methods of use thereof10 Sep 2026US 2026/0263431 A1Allianthera Boston Inc.
- Artificially synthesized sphingosine derivative lipoid monomer and use of same for delivering nucleic acid6 Aug 2026US 2026/0224704 A1Beijing Baishihekang Pharmaceutical Technology (Bsjpharma) Co., Ltd
- Cabozantinib compositions and methods of use21 May 2026US 2026/0138953 A1Handa Oncology, LLC
- Alkyl ether sulfate surfactants and associated methods of manufacture26 Mar 2026US 2026/0085037 A1
- Application of compound or traditional chinese medicine extract in preparation of nucleic acid delivery agent, and related products1 Jan 2026US 2026/0000768 A1Beijing Baishihekang Pharmaceutical Technology (Bsjpharma) Co., Ltd
Most cited
By later US patents
- Mid-chain branched surfactants193US 6,020,303 AThe Procter & Gamble Company · 2000
- Mid-chain branched alkyl sulfate surfactants175US 6,060,443 AThe Procter & Gamble Company · 2000
- Detergent compositions containing selected mid-chain branched surfactants167US 6,326,348 B1The Procter & Gamble Company · 2001
- Mid-Chain branched Alkoxylated Sulfate Surfactants147US 6,008,181 AThe Procter & Gamble Company · 1999
- Highly branched primary alcohol compositions, and biodegradable detergents made therefrom92US 5,849,960 AShell Oil Company · 1998